/*
 * SendMail.java
 *
 * Created on 6 luglio 2005, 17.34
 *
 * To change this template, choose Tools | Options and locate the template under
 * the Source Creation and Management node. Right-click the template and choose
 * Open. You can then make changes to the template in the Source Editor.
 */

package Network;
import java.io.*;
import java.nio.*;
import java.net.*;



/**
 *
 * @author andrea
 */
public class SendMail {
    private static String CRLF = "\r\n";
    
    
    private final static char base64Array [] = {
      'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H',
      'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P',
      'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X',
      'Y', 'Z', 'a', 'b', 'c', 'd', 'e', 'f',
      'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n',
      'o', 'p', 'q', 'r', 's', 't', 'u', 'v',
      'w', 'x', 'y', 'z', '0', '1', '2', '3',
      '4', '5', '6', '7', '8', '9', '+', '/'
 };

  private static String base64Encode (String string)    {
    String encodedString = "";
    byte bytes [] = string.getBytes ();
    int i = 0;
    int pad = 0;
    while (i < bytes.length) {
      byte b1 = bytes [i++];
      byte b2;
      byte b3;
      if (i >= bytes.length) {
         b2 = 0;
         b3 = 0;
         pad = 2;
         }
      else {
         b2 = bytes [i++];
         if (i >= bytes.length) {
            b3 = 0;
            pad = 1;
            }
         else
            b3 = bytes [i++];
         }
      byte c1 = (byte)(b1 >> 2);
      byte c2 = (byte)(((b1 & 0x3) << 4) | (b2 >> 4));
      byte c3 = (byte)(((b2 & 0xf) << 2) | (b3 >> 6));
      byte c4 = (byte)(b3 & 0x3f);
      encodedString += base64Array [c1];
      encodedString += base64Array [c2];
      switch (pad) {
       case 0:
         encodedString += base64Array [c3];
         encodedString += base64Array [c4];
         break;
       case 1:
         encodedString += base64Array [c3];
         encodedString += "=";
         break;
       case 2:
         encodedString += "==";
         break;
       }
      }
      return encodedString;
  }
    
    
    private String MailServer = "";
    
    private String SenderAddress = "";
    
    /** Creates a new instance of SendMail */
    public SendMail() {
    }
   
    public void setMailServer (String Mail_Server) {
        MailServer = Mail_Server;
    }
    
    public void setSender (String sender) {
        SenderAddress = sender;
    }
    
    public String InviaMail(String Recipient, String Subject ,String Message) throws Exception {
        String Output = "";
        Socket s = new Socket(MailServer, 25);
        OutputStreamWriter out = new OutputStreamWriter(s.getOutputStream(), "US-ASCII");
        BufferedReader in = new BufferedReader(new InputStreamReader(s.getInputStream(), "US-ASCII"));
        String line;

        line = in.readLine();
        //System.out.println(line);
        Output += line;
        if(!line.startsWith("220")) {
            throw new Exception(line);
        }

        line = "HELO localhost.localdomain";
        out.write(line+CRLF); out.flush();
        //System.out.println(line);
        Output += line;
        
        line = in.readLine();
        //System.out.println(line);
        Output += line;
        if(!line.startsWith("250")) {
            throw new Exception(line);
        }

        line = "MAIL FROM: <" + SenderAddress + ">";
        out.write(line+CRLF); out.flush();
        //System.out.println(line);
        Output += line;

        line = in.readLine();
        //System.out.println(line);
        Output += line;
        if(!line.startsWith("250")) {
            throw new Exception(line);
        }

        line = "RCPT TO: <" + Recipient + ">";
        out.write(line+CRLF); out.flush();
        //System.out.println(line);
        Output += line;

        line = in.readLine();
        //System.out.println(line);
        Output += line;
        if(!line.startsWith("250")) {
            throw new Exception(line);
        }
        
        line = "DATA";
        out.write(line+CRLF); out.flush();
        //System.out.println(line);
        Output += line;

        line = in.readLine();
        //System.out.println(line);
        Output += line;
        if(!line.startsWith("354")) {
            throw new Exception(line);
        }
        
        line = 
        "Subject: " + Subject +CRLF+
        ""+CRLF+
        Message+CRLF+
        "."+CRLF;
        
        out.write(line); out.flush();
        //System.out.println(line);
        Output += line;
        
        line = in.readLine();
        //System.out.println(line);
        Output += line;
        if(!line.startsWith("250")) {
            throw new Exception(line);
        }
        
        line = "QUIT";
        out.write(line+CRLF); out.flush();
        //System.out.println(line);
        Output += line;
        
        line = in.readLine();
        //System.out.println(line);
        Output += line;
        if(!line.startsWith("221")) {
            throw new Exception(line);
        }
        
        s.close();
        return Output;
    }
    
    
    
    public String InviaMailAuth(String Recipient, String Subject ,String Message, String User, String Pass) throws Exception {
        String Output = "";

        return Output;
    }
    
    
    
    
    
    
    
}
